A Carbon Star Survey of the Local Group Dwarf Galaxies. I. IC 1613

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Abstract
We present results of a multifilter survey of the whole Magellanic-type galaxy IC 1613. Narrowband CN and TiO filters are used to identify carbon stars among red giants. We have identified 195 carbon stars, extending up to 15' from the center of the galaxy. We present well-calibrated R and I magnitudes for all stars. The large field surveyed allows a reliable foreground estimate of M stars, leading to a C/M ratio of 0.64, when giants as early as M0 are counted. Analysis of the photometric properties of the C star population reveals a narrow MI distribution with a mean MI of -4.69, with a dispersion of ±0.28. IC 1613 has, for its absolute magnitude, a normal number of C stars.